From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6D17BC3DA6E for ; Mon, 25 Dec 2023 23:32:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ee8oXnFgzclWm1BvOtC6oqEuuf0T/q5pE6MGVYARb7I=; b=aN7Y7BfQQ3WOeR NsSwv3KWbEn6O+oBjWYV5PbFp4VQWXlnx5rvBPldjA2YzMaCykVwSnAruhYMB4Cl+XS1n7Ca1qJ/V jz0GSDKo8s9EuoqfKXs1/mS/cYjssaRCYLC0quJWqq7gA4TqMZXEhIttRRbzA3MJxZ4AMqh+y6qAD GVJOBMR60XlvXERZ6IIgt5xOQjprygDgOukyesQF9ZzEuhQ6xcNhoKZLjpPP3AHH+LzbjDQ40BaWr LtPL42dzZr8AE9ytCNFGl/vfIA0KmtsyG9D5pWr6UUEh5Pgc2e0PURnTvkI6kWPMCLjtme4uYqZdB fOsaFgLayeG1z99icqSA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rHuQV-00BNq7-0X; Mon, 25 Dec 2023 23:32:03 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rHuQR-00BNpi-1x for kexec@lists.infradead.org; Mon, 25 Dec 2023 23:32:02 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1703547116; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=BSlPAyAZzv+QVMkLmtnw21kPDx01ngb4jPGaj9Nd6Dk=; b=cu2DyaeJ5BNca6CG8XbZeaXYTMCraM4JoiUpPgzx8HzgQp8GZjoFTfHgt12232PnRL6aO3 t3V81zjZxzMdh1stfq24evv5xK+jRdzfTKYOxauWeNPo13h0F5OIL3YGAOpk/rtYFHhMjQ HE007AF/jvtR+dklGJ9xzpszq2WM63Q= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-247-Kp_o3q8TMuunmh3-dbEeKw-1; Mon, 25 Dec 2023 18:31:54 -0500 X-MC-Unique: Kp_o3q8TMuunmh3-dbEeKw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id E07831C172C1; Mon, 25 Dec 2023 23:31:53 +0000 (UTC) Received: from localhost (unknown [10.72.116.38]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 0E1691C060AF; Mon, 25 Dec 2023 23:31:52 +0000 (UTC) Date: Tue, 26 Dec 2023 07:31:49 +0800 From: Baoquan He To: fuqiang wang , akpm@linux-foundation.org Cc: Vivek Goyal , Dave Young , kexec@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3] x86/kexec: fix potential cmem->ranges out of bounds Message-ID: References: <20231222121855.148215-1-fuqiang.wang@easystack.cn> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.7 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231225_153159_713563_DF212A06 X-CRM114-Status: GOOD ( 15.98 ) X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org T24gMTIvMjUvMjMgYXQgMDk6NDRwbSwgZnVxaWFuZyB3YW5nIHdyb3RlOgo+IOWcqCAyMDIzLzEy LzI0IDEyOjQ2LCBCYW9xdWFuIEhlIOWGmemBkzoKPiAKPiA+IFJldGhpbmsgYWJvdXQgdGhpcywg c2VlbXMgYWJvdmUgY29kZSBjb21tZW50IGlzIGZpbmUgdG8gYmUga2VwdCwgYW5kIHRoZQo+ID4g c2FtZSBmZWVsaW5nIGFib3V0IHRoZSBlbGZoZWFkZXIgcmVnaW9uIHNwbGl0IGZyb20gY3Jhc2hr X3Jlcy4gU28sIG90aGVyCj4gPiB0aGFuIHRoZSBwYXRjaCBsb2cgY29uY2VybnMsIHRoaXMgcGF0 Y2ggbG9va3MgZ29vZCB0byBtZS4gTGV0J3Mgc2VlIGlmCj4gPiBvdGhlciBwZW9wbGUgaGFzIGNv bmNlcm4gYWJvdXQgdGhlIG5ld2x5IGFkZGVkIGNvbW1lbnRzLgo+ID4gCj4gCj4gSGkgQmFvcXVh bgo+IAo+IFRoYW5rIHlvdSB2ZXJ5IG11Y2ggZm9yIHlvdXIgc3VnZ2VzdGlvbnMgaW4gdGhlIHBh dGNoIGxvZyBhbmQgY29kZSBjb21tZW50cy4gSQo+IGhhdmUgbGVhcm5lZCBhIGxvdCBhbmQgSSB3 aWxsIGdyYWR1YWxseSBpbXByb3ZlLgo+IAo+IEkgZm91bmQgdGhlIGZvbGxvd2luZyBwYXRjaCBp biBsaW51eC1uZXh0Ogo+IGh0dHBzOi8vZ2l0Lmtlcm5lbC5vcmcvcHViL3NjbS9saW51eC9rZXJu ZWwvZ2l0L25leHQvbGludXgtbmV4dC5naXQvY29tbWl0Lz9pZD02NjZlZjEzZjI4NzBjNDNiYThh NDAyZWM4YTNjZWRmNmViNmM2ZjVhCj4gCj4gSSdtIHNvcnJ5LCBJdCdzIG15IG1pc3Rha2UuIERv IHlvdSB0aGluayBpdCBpcyBzdGlsbCBuZWNlc3NhcnkgdG8gbWVyZ2UgdGhpcwo+IHBhdGNoIGJh c2VkIG9uIHRoYXQgPwoKVGhhdCBwYXRjaCBuZWVkIGJlIHdpdGhkcmV3IGJlY2F1c2UgdGhhdCBp cyBub3QgZXhwZWN0ZWQgYWNjb3JkaW5nIHRvCm91ciBkaXNjdXNzaW9uLgoKSGkgQW5kcmV3LAoK Q291bGQgeW91IHdpdGhkcmF3IHRoZSBwYXRjaCBmdXFpYW5nIG1lbnRpb25lZD8KCng4Ni9jcmFz aDogZml4IHBvdGVudGlhbCBjbWVtLT5yYW5nZXMgYXJyYXkgb3ZlcmZsb3cKaHR0cHM6Ly9naXQu a2VybmVsLm9yZy9wdWIvc2NtL2xpbnV4L2tlcm5lbC9naXQvbmV4dC9saW51eC1uZXh0LmdpdC9j b21taXQvP2lkPTY2NmVmMTNmMjg3MGM0M2JhOGE0MDJlYzhhM2NlZGY2ZWI2YzZmNWEKClRoYW5r cwoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmtleGVj IG1haWxpbmcgbGlzdAprZXhlY0BsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZy YWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8va2V4ZWMK